Ubuntu
acpi package

  1. Bug #669411
  2. Comment #46

Comment 46 for bug 669411

Revision history for this message
Fabio Marconi (fabiomarconi) wrote : Re: [Firmware Bug]: ACPI: ACPI brightness control misses _BQC function Brightness key combinations disables entire Linux on Samsung R439 Laptop

From BootDmesg.txt
[ 12.306186] [Firmware Bug]: ACPI: ACPI brightness control misses _BQC function